Interplay between structure and density anomaly for an isotropic core-softened ramp-like potential

de Oliveira, Alan Barros; Netz, Paulo A.; Barbosa, Marcia C.

Interplay between structure and density anomaly for an isotropic core-softened ramp-like potential

Authors

de Oliveira, Alan Barros

Netz, Paulo A.

Barbosa, Marcia C.

Description

Using molecular dynamics simulations and integral equations we investigate the structure, the thermodynamics and the dynamics of a system of particles interacting through a continuous core- softened ramp-like interparticle potential. We found density, dynamic and structural anomalies similar to that found in water. Analysis of the radial distribution function for several temperatures at fixed densities show a pattern that may be related to the origin of density anomaly.
7 pages, 3 figures